Inhibited fluorocarbon rocket propellant
OwnerVictor F. Castaneda, Homer L. Davisinventors
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Abstract
A fluorocarbon bound rocket propellant grain provided with a compatible burn inhibitor on selected areas, particularly the outer surface, which is inexpensive and simple to apply.
Claims3
The method of restricting the burning of fluorocarbon bound propellant grains which comprises spraying the grain with a mixture consisting of 80 parts by weight modified diglycidyl ether of para, para'-isopropylidenediphenol, and 20 parts by weight polymeric amido-amine hardner at a temperature ranging from 100.degree. F. to 150.degree. F., permitting a layer of said mixture to deposit on said grain, and cooling for about one hour at room temperature until said layer is cured.
The fluorocarbon bound propellant grain having its outer surface covered with a layer of restrictive burning material consisting essentially of a mixture of about 80 parts by weight modified diglycidyl ether of para, para'-isopropylidenediphenol type liquid epoxy resin and about 20 parts by weight of a polymeric amido-amine hardner;
- said grain comprising about 15% by weight polytetrafluoroethylene, about 15% by weight of the copolymer of vinylidene fluoride and perfluoropropylene, about 49.5% by weight ammonium perchlorate, about 19.5% by weight aluminum and about 1% by weight sodium fluoride.
Dependencies are inferred from the claim text.